Signal horn



May zo, 1924.

S. C. RODESS SIGNAL HORN 'Filed Aug. 15, 1922 2 Sheets-Sheet 1 AT ToR ga BY NEY May' 2o, 1924. 1,494,931

S. C. RODESS SIGNAL HORN Filed Aug. 16 1922 2 Sheets-51u29?. 2

, INVENToR BY M ATTORNEY f l 7: @rum/L Patented May 20, 1924.

sAivinELcroDEss, QNEWYBKQNX.-

Be it knownthat I, SAMUELI C."Rooi`iss, a citizen of theUnited States,"andresident of `New York', inthe countyofNew-*York and State of New York, haveinv'en'ted'certain new and useful yIinproveiii'ents' in Signal Horns,'of which thet'ollowi'n'g is a specification. i f f l.. i My invention relates tov improvements in i signal horns of vthevariety eiiibodying adia- A'phragm and an factuat'oi"Lto*engagev afstud on vthe diaphragm 'tovibat the latter to vproduce the desired' signals."A The actuator of such signal horns are :usually yoperated "miby m'eans of'aii electricimotor, sofar as I vam aware. l.

lThey object of 4my invention is yto provide vmeans for'operz'iting'4 the diaphragm actuator of horns ofthe jclassreferied toby vmeans of gas'pressure and exhaust from an internal combustion' engine",-A means being provided to at will 'control '-suicfh-y pressure- `aiideXhauSt for vibration of the diaphragm of the horn.

, My invention/comprises novell detailsyof 3 j iniprovement'that 'willbe more fully-hereiny 'after set forth andtlien'pointed out inthe j Q f- "18.will'causethefdogs 19, 20 to- 'rotateftlie rclaims.` Y i I Reference' is lto' loelziaclI to the accompanying drawings, forming part-hereof, wherein, Fig.'1"is 'apartly'se'ctional side view of a signalhorn 'embodying 'my invention;

FigJQiis across sectionfon 'line 2, 2, in

v Fig.V 1:

lFigs'. 4a and4b are' sectional details'fv "Similar .numerals offreference indicate x -correspondingp'arts@intlielsevera'l views...`

The ho'rnfilli'istrated comprisesv av suitable casing lfprovided with va diaphragmland a soundingitube'or horn 3, .whichfmay be of any suitable or usualrconstruction. pThe dapliragmis shown provided lwith aprojection i "y 4,"fill'iis'trated'inftheform of a screw retained in adjusted position by a nut 5. An actuator or rotor 61s shownprovided with an uneven "sui-tace, or projections at f7, of any Well s knownvariety, to engage the projection;4. to

'cause vibrationof thel diaphragm. 'I pro-f` vide :a reciprocati'veI member orpiston 8to ope'rate'the actuator 6,'which member or pisy'ton is guided within "a cylinderior tube 9 carried by casing 1in 4`any suitableway, as l by means of bracketor blockl() secured'by screws i or the like to the casing and to cylinder 9. y y

In the lform shown i in' Figs. "1 to- 4 the actuator orrotor 6 isv carried by a shatvll V 'journaled in the bracket 10 and provided with a gear or pinion k12 that isinrmesh with 'gears 13, 14-loose'on shaft-S15, 16 journaled in vbearings on the-aforesaid bracket orfsupport. `The shafts.15,"16'respectively carryf' ratclietiwheelsl, 18 adapted to be engagedr by spring Vpressed pawls 19,i QOvpivotally car# ried Vby gears 21,v 22`respectively thatV are in mesh with rack teeth Sa, 8b shownoli/op# posite sides of the piston or member. Thev cylinder 9`is shown provideduwitli slots 9` in its-wall thioughwhcli 'thegears 21, 22 projectto mesh witlithe racks-8, 8W When the pistonor Amember 8 is reciprocated the gearing willbe operated invan appropriated' directionin suoli a manner that'the gears 17,

gears 13, 14 in similar directionso-tha'ttlie .pinionforgear127will be Erotated in a single direction i tor `correspondingly rotating the actuator'or rotor 6 `to engage the-projection 4 of .the diaphragm to vibrate the latter Stor Fand' 22. f

' .In the construction.shownv in Figs. "5 and l.Gnthe actuator 61is` in segmental-form andk is rocked to operatcthe .projection 4 of vthe diaphragm... In 'tliisicase the actuator G is caiiied by a ypivot 23, supportedv'by `bracket 10, aridisaid actuator is provided with gear teeth 6a vprojecting through slot-9aV in cylinder-9iai1`diin meshwith'rack 8a on piston ormernber 8, Vhen` said piston is recipro :cated the actuator iwill be rocked to cause its projection or teeth/Ito operate-projection 4 of thediaphragmtovibrate the lat- Ater.` 'I`o resist the operation of the actuator and the piston.at.theterniinationof their strokes I provide cushioning -nieans In Figzk I liave'illu'strated 'springs 6 car- Vried bythe actuator adaptedto engage the the valve Aagainst its .seat

cylinder 9 near the terminationy of the strokes of the actuator to resiliently resist such strokes. n j

The piston or member 4 is to bereiprocated by means of gas pressure and exhaust from an internal combustionvengine. Any suitable means may be provided to control,

at will, the gas pressure and exhaust `inV` cylinder 9. In the forml shown in. Figs, 1 to 4 a valve 24 is carried by a stern 25 longitudinally operative in cylinder 9,.and

.piston or member 8v is provided with a bore 8b through which said stem -projeots-where by said pistonfis slidable witlrrespect tO the stem. Valve- 24 is adapted toV close against a seat 26 at the lower end of cylinder 9. Said cylinder may be attac-hed to a gas engine to communicate with its cylinder by any suitable means, such as by threads or a litt-ing 27 on said cylinder 9,

whereby the bore of said cylinder may be placed in communication with the engine cylinder, the valve 24 controlling gas pressurepand exhaust fromthe engine cylinder to cylinder 9. The stem 25 may be operated by any suitable means, I have illustrated a lever '28 adapted to engage stem 25 to unseat the valve and a spring 29 operative against a nut or fitting 30' and against a stop 31 on stem 25 serves normally to close The lever 28 is pivotally supported upon projection 32 extending from nut v30. Lever 28 may 'be connected .by any suitable connection with Y a pull button or lever that may be attac-hed to any part of an automobile. boat or the like in convenient position to be controlled by the operator.v

In the form shown inv Figs.y 5, 6 and 7 thev cylinder 9 may be connected with Yany Y suitable support, as by means of a `fitting 'Y l33 attached lto-cy'linder 9 and adapted to :be attached toasuitable support such as boat.

toa bracket carried by an automobilevor A pipe 34 isfconnected to fitting-33 and toma valve construction v35 which is `Vadapted to be attached to the cylinder of an internal combustion engine to receive compressed gases and exhaust therefrom. The valve construct1on`35 comprises a cas-A ing lto which the pipe 34 1s connected and 'has `a valve 36 provided with `a stem 36a to beoperatedl by a lever`37 pivotally sup-.- ported upon thec'asing. The valve is nor- L znally closed'y and when lever 37 is operated by'noeansr 'of a connection 38 the pressure and exhaust'fro-m the engine will operate in `cylinder 9 to actuate the piston lor member 8. The valvey casing may be connected with spark plug or an adopter ofl known construction to receive pressure and exhaust from the engine.`

To control the effective pressure in the zbore of cylinder9, of Figs. 5 to 7. the pisy ton or member 8 is provided with a stein' lposite sides o? the disk are adapted to .A spring -43-on stem39,v thrusting against the piston,- normally pushes valve 41 toward disk 40 and a springf'44on said stem bearing against astop 45'on said stem and against valve 42normally pushes vthe valve toward disk 40.` Shoulders 46, 47 on stem 39 resist movement of valves 41 and42 toward disk 40. T he valves`41, 42 may alternatelybearagainst oppositev sides of disk` 40 and may float Awith stem 15 free from `disk 40 for a distance of travel'of` piston .8. When piston 8 has risen on the pressure stroke part o-fits limit of travel'tlie valve 42 will engage disk 40 to shut off yflow of fluid against piston 8 and the momentum of the said memberfwilfl causebit to continue a short distance against the resistance of spring 44 whereupon the pistonwill stop. For the next stroke suction` or. exhaust in thelower part ofcylinder`9, as well as the effect. of gravity,.will cause piston 8-to descend and valve 42'willpassfrom'disk40,

and after part of the limit ofy such stroke the valve 41 will engage disk 40 to shut ofi the effect' 4of the exhaust in the .borer of cylinder 9 Lagainst piston 8 and the momentum of -said piston will be checkedbyy spring 43 and the piston will stop.

rTlie'reciprocations ofthe piston or member 8 may be checked-by any'vsuitable means, such as by springsa, b,.within1 cylinder 9, (Fig. 4b). The controlling valve construe tion for the pressure and1 exhaust, shown in Figs; 5 to 7*,may'beuse'd in the form shownv j in Figs. 1 to 4, in which case the valve 24,

its stern 25-and lever 28 will be omitted.

'i In accordance ,with invention, when the pressure and exhausty -from a gas engine is effective in cylinder 9., the piston or'mem-, ber 8 will reciprocate to rcause operation of actuator 6, either with rotary motion i-none directionasin Figs. 1 to4, orfw-ithfos'cillating or rocking motion asin Figs. y5 to 7,-to cause vibration lof the diaphragm! construction set forth, within the scope o the appended claims, ywithout `departing from lthe spirit of my invention.

Havingrnow described my invention, whatA I' claim is i 1. A signal vhorn comprising a diaphragm havinga project-iom-fan actuator for the projection, a cylinder, a piston reciprocative'; in the cylinder, devices ltooperate the actua- 12o Changes vmay be madein thedetail of lavage-1' tor, the piston having means to operate said devices, and means to at will connect said cylinder with a source of pressure and exhaust to reciprocate said piston by alternate pressure and exhaust.

2. A signal horn comprisingl a diaphragm having a projection, an actuator for the projection, a cylinder, a piston reciprocative in the cylinder, gearing between the piston and the actuator for voperating the latter by the former, and means to at will connect said cylinder with a source of pressure and exhaust to reciprocate said piston by alternate pressure and exhaust.

3. A signal horn comprising a diaphragm having a projection, an actuator for the projection, a cylinder, a piston reciprocative in the cylinder, said piston having a rack, gear means actuated by the rack to operate the actuator, a pipe communicating With the cylinder, a casing connected to the pipe and having means to connect it to an internal combustion engine cylinder, a valve for said casing to control pressure and exhaust from the engine to the first named cylinder, and

means to at will actuate said valve.

4. A signal horn comprising a diaphragm having a projection, an actuator for the projection, a cylinder, a piston reciprocative in the cylinder, said piston having a rack, a gear to mesh with the rack, a gear connected with the actuator, gearingy comprising a ratchet operating the actuator in one direction, a pipe communicating Withthe cylinder, a casing connected to the pipe and having means to connect it to an internal com'- bustion engine cylinder, a valve for said casing to control pressure and exhaust from the engine to the first named cylinder, and means to at will actuate said valve.

5. A signal horn comprisinga diaphragm having a projection, an actuator for the pro' jection, a cylinder a piston reciprocative in the cylinder, said piston having racks, gears in mesh With said racks,` shafts provided With loose gears and having ratchets at tached to the shafts, pawls carried by the last named gears and co-operative With the ratchets, a gear connected With the actuator and in mesh With the last named gears, and means to at Will connect said cylinder with a source of pressure and exhaust to reciprocate said pistonfby alternatepressure and exhaust.

SAMUEL C. RODESS. 

